ASP.NET中使用System.Net.Mail发邮件

来源：互联网发布：京东全球购奶粉知乎编辑：程序博客网时间：2024/04/30 19:57

一、应用场合。

网站注册的时候，会发一个确认邮件；密码丢失了，发邮件找回密码；给用户发广告信息等等。

二、一般的邮件发送。

public static void SendMail()//普通的邮件发送
{
    MailAddress from = new MailAddress("FromEmail@website.com");
    MailAddress to = new MailAddress("ToEmail@website.com");
    MailMessage message = new MailMessage(from, to);
    message.Subject = "邮件标题";
    message.Body = "邮件内容";
    MailAddress copy = new MailAddress("CopyToEmail@website.com");//抄送给
    message.CC.Add(copy);
    SmtpClient client = new SmtpClient("SMTP Server");

client.Credentials = CredentialCache.DefaultNetworkCredentials;
client.Send(message);
}

三、带HTML格式的Email发送

public static void SendMail()//带HTML的邮件发送
{
    MailAddress from = new MailAddress("FromEmail@website.com");
    MailAddress to = new MailAddress("ToEmail@website.com");
    MailMessage message = new MailMessage(from, to);
    message.Subject = "邮件标题";

    MailAddress copy = new MailAddress("CopyToEmail@website.com");//抄送给
    message.CC.Add(copy);
    SmtpClient client = new SmtpClient("SMTP Server");

client.Credentials = CredentialCache.DefaultNetworkCredentials;
client.Send(message);
}

四、带附件的邮件

Attachment attachment = new Attachment("C:\\附件.rar");
message.Attachments.Add(attachment);

    MailAddress copy = new MailAddress("CopyToEmail@website.com");//抄送给
    message.CC.Add(copy);
    SmtpClient client = new SmtpClient("SMTP Server");

client.Credentials = CredentialCache.DefaultNetworkCredentials;
client.Send(message);
}
五、邮件为HTML，而且带图片。

public static void SendMail()//带HTML，并且HTML中有图片的邮件发送
{
    MailAddress from = new MailAddress("FromEmail@website.com");
    MailAddress to = new MailAddress("ToEmail@website.com");
    MailMessage message = new MailMessage(from, to);
    message.Subject = "邮件标题";

string plainTextBody = "如果你邮件客户端不支持HTML格式，或者你切换到“普通文本”视图，将看到此内容";
 message.AlternateViews.Add(AlternateView.CreateAlternateViewFromString(plainTextBody, null, "text/plain"));
 string htmlBodyContent = "如果你的看到这个，说明你是在以 HTML 格式查看邮件 ";
 htmlBodyContent += "<a href="http://www.baidu.com/\">百度一下</a><img src="cid:imageInEmail"/>";
 AlternateView htmlBody = AlternateView.CreateAlternateViewFromString(htmlBodyContent, null, "text/html");

 LinkedResource lrImage = new LinkedResource("C:\\图片.jpg", System.Net.Mime.MediaTypeNames.Image.Jpeg);
 lrImage.ContentId = "imageInEmail"; //此处的ContentId 对应 htmlBodyContent 内容中的 cid: ，如果设置不正确，请不会显示图片
 htmlBody.LinkedResources.Add(lrImage);

message.AlternateViews.Add(htmlBody);

    MailAddress copy = new MailAddress("CopyToEmail@website.com");//抄送给
    message.CC.Add(copy);
    SmtpClient client = new SmtpClient("SMTP Server");

client.Credentials = CredentialCache.DefaultNetworkCredentials;
client.Send(message);
}

六、图片为动态生成。

    MemoryStream imgStream = GetImage();
    imgStream.Position = 0;//非常重要，否则图片为空！！！！！在邮件里显示红叉
    LinkedResource lrImage = new LinkedResource(imgStream, System.Net.Mime.MediaTypeNames.Image.Jpeg);
    lrImage.ContentId = "imageInEmail"; //此处的ContentId 对应 htmlBodyContent 内容中的 cid: ，如果设置不正确，请不会显示图片
    htmlBody.LinkedResources.Add(lrImage);

message.AlternateViews.Add(htmlBody);

    MailAddress copy = new MailAddress("CopyToEmail@website.com");//抄送给
    message.CC.Add(copy);
    SmtpClient client = new SmtpClient("SMTP Server");

client.Credentials = CredentialCache.DefaultNetworkCredentials;
client.Send(message);
}

public static MemoryStream GetImage()
{
//Code here... ...
}

---转载:http://blog.sina.com.cn/s/blog_4e7d38260100dq1l.html

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